@inproceedings{f0e0b22cd3be4c21b73299f23ffc7ab9,
title = "Transverse Doppler velocimetry of optically propelled microparticles in anti-resonant hollow-core fiber",
abstract = "Laser Doppler velocimetry is a powerful tool for monitoring the instantaneous velocities of moving objects [1, 2]. Doppler velocimetry has been exploited to measure the axial velocities of single and multiple optical propelled particles over anti-resonant hollow-core fiber (AR-HCF) for the purpose of particle delivery and distributed sensing [3]. Here we report the observation of angle-dependent transverse Doppler frequency shifts of optically trapped microparticles in AR-HCF. The experiment setup is sketch in Fig. 1(a). The trapping beam is coupled into the fundamental core mode from one end of the fiber. An objective lens with numerical aperture of 0.8 is placed at the side of the fiber to measure the transverse Doppler frequency. Two pinholes (diameter 1 mm) with different spacings (D) are placed in front of the objective lens so that side-scattered light from determined scattering angles α is collected by PD2.",
author = "Rui Wang and Chenjie Liang and Yi Jiang and Shangran Xie",
note = "Publisher Copyright: {\textcopyright} 2025 IEEE.; 2025 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2025 ; Conference date: 23-06-2025 Through 27-06-2025",
year = "2025",
doi = "10.1109/CLEO/EUROPE-EQEC65582.2025.11111608",
language = "English",
series = "2025 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2025",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
booktitle = "2025 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2025",
address = "United States",
}